/*
 * Copyright (c) 2009 Dave Gamble
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#ifndef cJSON__h
#define cJSON__h

#ifdef __cplusplus
extern "C"
{
#endif

/* cJSON Types: */
#define cJSON_False 0
#define cJSON_True 1
#define cJSON_NULL 2
#define cJSON_Number 3
#define cJSON_String 4
#define cJSON_Array 5
#define cJSON_Object 6

#define cJSON_IsReference 256

/* The cJSON structure: */
typedef struct cJSON {
  /* next/prev allow you to walk array/object chains.
   * Alternatively, use GetArraySize/GetArrayItem/GetObjectItem
   */
	struct cJSON *next, *prev;
  /* An array or object item will have a child
   * pointer pointing to a chain of the items in the array/object.
   */
	struct cJSON *child;

	int type;					/* The type of the item, as above. */

	char *valuestring;			/* The item's string, if type==cJSON_String */
	unsigned long int valueint;		/* The item's number, if type==cJSON_Number */
	double valuedouble;			/* The item's number, if type==cJSON_Number */
  /* The item's name string, if this item is the child of,
   * or is in the list of subitems of an object.
   */
	char *string;
} cJSON;

typedef struct cJSON_Hooks {
	void *(*malloc_fn)(size_t sz);
	void (*free_fn)(void *ptr);
} cJSON_Hooks;

/* Supply malloc, realloc and free functions to cJSON */
extern void cJSON_InitHooks(cJSON_Hooks *hooks);


/* Supply a block of JSON, and this returns a cJSON object you can interrogate.
 * Call cJSON_Delete when finished.
 */
extern cJSON *cJSON_Parse(char *value);
/* Supply a block of JSON, and this returns a cJSON object you can interrogate.
 * Call cJSON_Delete when finished.
 * end_ptr will point to 1 past the end of the JSON object
 */
extern cJSON *cJSON_Parse_Stream(char *value, char **end_ptr);
/* Render a cJSON entity to text for transfer/storage. Free the char* when finished. */
extern char  *cJSON_Print(cJSON *item);
/* Render a cJSON entity to text for transfer/storage without any formatting.
 * Free the char* when finished.
 */
extern char  *cJSON_PrintUnformatted(cJSON *item);
/* Delete a cJSON entity and all subentities. */
extern void   cJSON_Delete(cJSON *c);

/* Returns the number of items in an array (or object). */
extern int	  cJSON_GetArraySize(cJSON *array);
/* Retrieve item number "item" from array "array". Returns NULL if unsuccessful. */
extern cJSON *cJSON_GetArrayItem(cJSON *array, int item);
/* Get item "string" from object. Case insensitive. */
extern cJSON *cJSON_GetObjectItem(cJSON *object, const char *string);

/* These calls create a cJSON item of the appropriate type. */
extern cJSON *cJSON_CreateNull(void);
extern cJSON *cJSON_CreateTrue(void);
extern cJSON *cJSON_CreateFalse(void);
extern cJSON *cJSON_CreateBool(int b);
extern cJSON *cJSON_CreateNumber(double num);
extern cJSON *cJSON_CreateString(const char *string);
extern cJSON *cJSON_CreateArray(void);
extern cJSON *cJSON_CreateObject(void);

/* These utilities create an Array of count items. */
extern cJSON *cJSON_CreateIntArray(int *numbers, int count);
extern cJSON *cJSON_CreateFloatArray(float *numbers, int count);
extern cJSON *cJSON_CreateDoubleArray(double *numbers, int count);
extern cJSON *cJSON_CreateStringArray(const char **strings, int count);

/* Append item to the specified array/object. */
extern void cJSON_AddItemToArray(cJSON *array, cJSON *item);
extern void	cJSON_AddItemToObject(cJSON *object, const char *string, cJSON *item);
/* Append reference to item to the specified array/object.
 * Use this when you want to add an existing cJSON to a new cJSON,
 * but don't want to corrupt your existing cJSON.
 */
extern void cJSON_AddItemReferenceToArray(cJSON *array, cJSON *item);
extern void	cJSON_AddItemReferenceToObject(cJSON *object, const char *string, cJSON *item);

/* Remove/Detatch items from Arrays/Objects. */
extern cJSON *cJSON_DetachItemFromArray(cJSON *array, int which);
extern void   cJSON_DeleteItemFromArray(cJSON *array, int which);
extern cJSON *cJSON_DetachItemFromObject(cJSON *object, const char *string);
extern void   cJSON_DeleteItemFromObject(cJSON *object, const char *string);

/* Update array items. */
extern void cJSON_ReplaceItemInArray(cJSON *array, int which, cJSON *newitem);
extern void cJSON_ReplaceItemInObject(cJSON *object, const char *string, cJSON *newitem);

#define cJSON_AddNullToObject(object, name) \
		cJSON_AddItemToObject(object, name, cJSON_CreateNull())
#define cJSON_AddTrueToObject(object, name) \
		cJSON_AddItemToObject(object, name, cJSON_CreateTrue())
#define cJSON_AddFalseToObject(object, name) \
		cJSON_AddItemToObject(object, name, cJSON_CreateFalse())
#define cJSON_AddNumberToObject(object, name, n) \
		cJSON_AddItemToObject(object, name, cJSON_CreateNumber(n))
#define cJSON_AddStringToObject(object, name, s) \
		cJSON_AddItemToObject(object, name, cJSON_CreateString(s))

#ifdef __cplusplus
}
#endif

#endif
